2022 TOYOTA RAV4 PRIME cooling

5198-2. Steps to take in an emergency
8
When trouble arises
run out of fuel. Stop the vehicle in
a safe place and, if the fuel level is
low, refuel the vehicle.
• “Hybrid system stopped”
• “Engine Stopped”
●If “Maintenance required for
DCDC converter cooling parts
See Owner’s Manual” is shown,
the filter may be clogged, the air
intake vent may be blocked, or
there may be a gap in the duct.
Therefore, perform the following
correction procedure.
• If the air intake vent or filter of the
DC/DC converter are dirty, per-
form the procedures on P.480 to
clean them.
• If the warning message is shown when the air intake vent and filter
of the DC/DC converter are not
dirty, have the vehicle inspected
at your Toyota dealer.
●If “12-Volt Battery Charging Sys-
tem Malfunction Stop in a Safe
Place See Owner’s Manual” is
shown
Indicates a malfunction in the vehi-
cle’s charging system. Pull over and
stop the vehicle as soon as it is safe
to do so.
While the message is displayed, the
functions of the air conditioning, etc.
may be partially lim ited in order to
reduce the power consumption of
the 12-volt battery.
■If “Hybrid System Overheated
Output Power Reduced” is
shown
The message may be shown when
driving under severe operating con-
ditions. (For example, when driving
up a long steep hill or driving up a
steep hill in reverse.)
Coping method: P.539
■If “Traction Battery Needs to be
Protected Refrain from the Use
of N Position” is shown
This message may be displayed when the shift lever is in N.
As the hybrid battery (traction bat-
tery) cannot be charged when the
shift lever is in N, shift the shift lever
to P when the vehicle is stopped.
■If “Traction Battery Needs to be
Protected Shift into P to
Restart” is shown
This message is displayed when the
hybrid battery (traction battery)
charge has becom e extremely low
because the shift lever has been left
in N for a certain amount of time.
When operating the vehicle, shift to
P and restart the hybrid system.
■If “Shift to P Before Exiting
Vehicle” is shown
Message is displayed when the
driver’s door is opened without turn-
ing the power switch to OFF with the
shift lever in any p osition other than
P.
Shift the shift lever to P.
■If “Shift is in N Release Acceler-
ator Before Shifting” is shown
Message is displayed when the
accelerator pedal has been
depressed and the shift lever is in N.
Release the accelerator pedal and
shift the shift lever to D or R.
■If “Press brake when vehicle is
stopped Hybrid system may
overheat” is shown
Message is displayed when the
accelerator pedal is depressed to
maintain the vehicl e position when
stopped on a upward slope, etc.
If this continues, the hybrid system
may overheat.
Release the accelerator pedal and
depress the brake pedal.
■If “Auto Power OFF to Conserve
Battery” is shown
Power was turned off due to the
automatic power off function.
Next time when starting the hybrid
system, operate the hybrid system

5398-2. Steps to take in an emergency
8
When trouble arises
■If the high coolant tempera-
ture warning light comes
on, flashes or “Engine
Coolant Temp High Stop in
a Safe Place See Owner’s
Manual” is shown on the
multi-information display
1 Stop the vehicle in a safe
place and turn off the air con-
ditioning system, and then
stop the hybrid system.
2 If you see steam:
Carefully lift the hood after
NOTICE
■When handling jumper cables
When connecting the jumper
cables, ensure that they do not
become entangled in the cooling
fan, etc.
■To prevent damaging the
vehicle
The exclusive jump starting termi-
nal is to be used when charging
the 12-volt battery from another
vehicle in an emergency. It cannot
be used to jump start another
vehicle.
If your vehicle over-
heats
The following may indicate
that your vehicle is over-
heating.
 The high coolant tempera-
ture warning light ( P.161)
comes on or flashes, or a
loss of hybrid system power
is experienced. (For exam-
ple, the vehicle speed does
not increase.)
 “Engine Coolant Temp High
Stop in a Safe Place See
Owner’s Manual” or “Hybrid
System Overheated Output
Power Reduced” is shown
on the multi-information dis-
play.
 Steam comes out from
under the hood.
Correction procedures

5408-2. Steps to take in an emergency
the steam subsides.
If you do not see steam:
Carefully lift the hood.
3 After the hybrid system has
cooled down sufficiently,
inspect the hoses and radia-
tor core (radiator) for any
leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
4The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.
Reservoir
“FULL” line
“LOW” line 5
Add coolant if necessary.
Water can be used in an emer-
gency if engine coolant is unavail-
able.
If water was added in an emer-
gency, have the vehicle inspected
at your Toyota dealer as soon as
possible.
6Start the hybrid system and
turn the air conditioning sys-
tem on to check that the radi-
ator cooling fan operates and
to check for coolant leaks
from the radiator or hoses.
The fan operates when the air con-
ditioning system is turned on imme-
diately after a cold start. Confirm
that the fan is operating by check-
ing the fan sound and air flow. If it is
difficult to check these, adjust the
temperature control switch to “LO”
and turn the “A/C” switch ON and
OFF. After this, turn the air condi-
tioning system on and off repeat-
edly. (The fan may not operate in
freezing temperatures.)
7 If the fan is not operating:
Stop the hybrid system
immediately and contact your
Toyota dealer.
If the fan is operating:
Have the vehicle inspected at
the nearest Toyota dealer.
8 Check if “Engine Coolant
Temp High Stop in a Safe
A
B
A
B
C

5418-2. Steps to take in an emergency
8
When trouble arises
Place See Owner’s Manual”
is shown on the multi-infor-
mation display.
If the message does not disappear:
Stop the hybrid system and contact
your Toyota dealer.
If the message is not displayed:
Have the vehicle inspected at the
nearest Toyota dealer.
■If “Hybrid System Over-
heated Output Power
Reduced” is shown on the
multi-information display
1 Stop the vehicle in a safe
place.
2 Stop the hybrid system and
carefully lift the hood.
3 After the hybrid system has
cooled down, inspect the
hoses and radiator core (radi-
ator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
4The coolant level is satisfac-
tory if it is between the “FULL” and “LOW” lines on
the reservoir.
Reservoir
“FULL” line
“LOW” line
5 Add coolant if necessary.
Water can be used in an emer-
gency if power control unit coolant
is unavailable.
If water was added in an emer-
gency, have the vehicle inspected
at your Toyota dealer as soon as
possible.
6After stopping the hybrid sys-
tem and waiting for 5 minutes
or more, start the hybrid sys-
tem again and check for the
multi-information display.
If the message does not disappear:
Stop the hybrid system and contact
your Toyota dealer.
If the message is not displayed:
The hybrid system temperature has
A
B
A
B
C

5428-2. Steps to take in an emergency
dropped and the vehicle may be
driven normally.
However, if the message appears
again frequently, contact your
Toyota dealer.
WARNING
■When inspecting under the
hood of your vehicle
Observe the following precau-
tions.
Failure to do so may result in seri-
ous injury such as burns.
●If steam is seen coming from
under the hood, do not open the
hood until the steam has sub-
sided. The engine compart-
ment may be very hot.
●After the hybrid system has
been turned off, check that the
“READY” indicator is off.
When the hybrid system is oper-
ating, the gasoline engine may
automatically start, or the cool-
ing fan may suddenly operate
even if the gasoline engine
stops. Do not touch or approach
rotating parts such as the fan,
which may lead to fingers or
clothing (especially a tie, a scarf
or a muffler) getting caught,
resulting in serious injury.
●Do not loosen the coolant reser-
voir cap while the hybrid system
and radiator are hot.
High temperature steam or
coolant could spray out.
NOTICE
■When adding engine/power
control unit coolant
Add coolant slowly after the
hybrid system has cooled down
sufficiently. Adding cool coolant to
a hot hybrid system too quickly
can cause damage to the hybrid
system.
■To prevent damage to the
cooling system
Observe the following precau-
tions:
●Avoid contaminating the coolant
with foreign matter (such as
sand or dust, etc.).
●Do not use any coolant additive.

5499-1. Specifications
9
Vehicle specifications
SAE 0W-16
SAE 0W-16 is the best choice
for good fuel economy and good
starting in cold weather.
If SAE 0W-16 is not available,
SAE 0W-20 oil may be used.
However, it must be replaced
with SAE 0W-16 at the next oil
change.Outside temperature
Oil viscosity (0W-16 is explained
here as an example):
• The 0W in 0W-16 indicates the characteristic of the oil
which allows cold startability. Oils with a lower value before
the W allow for easier starting
of the engine in cold weather.
• The 16 in 0W-16 indicates the viscosity characteristic of the
oil when the oil is at high tem-
perature. An oil with a higher
viscosity (one with a higher
value) may be better suited if
the vehicle is operated at high
speeds, or under extreme
load conditions.
How to read oil container label:
API registered mark is added to
some oil containers to help you
select the oil you should use.
*: The coolant capacity is the quantity of reference.
A
Cooling system
Capacity*Gasoline engine8.7 qt. (8.2 L, 7.2 Imp. qt.)
Power control unit2.1 qt. (2.0 L, 1.8 Imp. qt.)
Coolant type
Use either of the following:
 “Toyota Super Long Life Coolant”
 Similar high-quality ethylene gly-
col-based non-silicate, non-amine,
non-nitrite, and non-borate cool-
ant with long-life hybrid organic
acid technology
Do not use plain water alone.

Alphabetical Index599
Charging time may increase 115
High voltage components....... 87
How to charge ...................... 123
Information related to charging display ................................ 119
Opening and closing the charging port lid.................. 100
Power sources precautions .. 113
Power sources th at can be used
........................................... 111
Safety functions.................... 120
When charging cannot be car- ried out ............................... 148
Charging port ........................... 99 If the charging port lid does not open ................................... 108
Locking and unlocking.......... 107
Opening and closing ............ 100
Child-protector ....................... 202
Child restraint s ystem ............. 51
Fixed with a LATCH system ... 60
Fixed with a seat belt ............. 55
Front passenger occupant clas- sification system ................... 44
Points to remember ................ 51
Riding with children ................ 50
Types of child restraint system installation met hod ............... 53
Using an anchor bracket ........ 62
Child safety ............................... 50 12-volt battery precautions . 462, 538
Airbag precautions ................. 39
Back door precautions ......... 203
Charging precautions ........... 120
Child restraint system............. 53
Heated steering wheel and seat
heater precautions ............. 401
How your child should wear the seat belt................................ 30
Moon roof precau tions ......... 248
Panoramic moon roof precau- tions ....................................252
Power window lock switch ....246
Power window precautions...245
Rear door child-protectors ....202
Seat belt extender precautions .............................................30
Seat belt precautions..............29
Seat heater precautions .......401
Cleaning ..........................440, 443 Aluminum wheels .................440
DC/DC Converter air intake vent
...........................................480
Exterior .................................440
Front camera ........................308
Interior ..................................443
Radar sensor ........................308
Seat belts .............................443
Water-repellent coating ........441
Clock ........................................169
Coat hooks ..............................423
Condenser ............. ..................459
Console box ............................408
Consumption screen ..............187
Convenience Services (Sugges- tion function).........................181
Coolant Capacity ...............................549
Checking ..............................458
Preparing and checking before winter ..................................382
Warning light ........................507
Cooling system .......................458 Engine overheating ..............539
Hybrid system overheating ...541
Cruise control Dynamic radar cruise control with full-speed range ..........334
Cup holders.............................408
Current fuel consumption......189
Current fuel economy ............172
Curtain shield airbags ..............34
Customizable featu res ...........565